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Chemical destaining and the delta correction for blue intensity measurements of stained lake subfossil trees

文献类型：期刊论文

作者Wang, Feng2,3; Arseneault, Dominique2,3; Boucher, Etienne1,4; Yu, Shulong5,6; Ouellet, Steeven2; Chaillou, Gwenaelle7; Delwaide, Ann9; Wang, Lily8
刊名BIOGEOSCIENCES
出版日期2020-09-18
卷号17期号:18页码:4559-4570
ISSN号1726-4170
DOI10.5194/bg-17-4559-2020
通讯作者Wang, Feng(feng.wang@uqar.ca)
英文摘要The stain of wood samples from lake subfossil trees (LSTs) is challenging the wide application of the blue intensity (BI) technique for millennial dendroclimatic reconstructions. In this study, we used seven chemical destaining reagents to treat samples of subfossil black spruce (Picea mariana (Mill.) B.S.P.) trees from two lakes in the eastern Canadian boreal forest. We subsequently compared latewood BI (LBI) and delta BI (DBI) time series along with conventional maximum latewood density (MXD) measured from the stained and destained samples. Results showed that the stain of our samples is most likely caused by post-sampling oxidation of dissolved ferrous iron in lake sediments that penetrated into wood. Three reagents (ascorbic acid, sodium ascorbate, and sodium dithionite all mixed with ethylenediaminetetraacetic acid) could remove >90% of Fe. However, even for the best chemical protocol, a discrepancy of about +2 degrees C compared to MXD data remained in the LBI-based temperature reconstruction due to incomplete destaining. On the contrary, the simple mathematical delta correction, DBI, was unaffected by the Fe stain and showed very similar results compared to MXD data (r>0.82) from annual to centennial timescales over the past similar to 360 years. This study underlines the difficulty of completely destaining lake subfossil samples while confirming the robustness of the DBI approach. DBI data measured from stained LSTs can be used to perform robust millennial temperature reconstructions.
WOS关键词REGIONAL CURVE STANDARDIZATION ; LIGHT IMAGE-ANALYSIS ; SUMMER TEMPERATURE ; RING CHRONOLOGIES ; LATEWOOD DENSITY ; IRON ; MANGANESE ; DENDROCLIMATOLOGY ; SPECIATION ; DYNAMICS
资助项目Natural Sciences and Engineering Research Council of Canada (PERSISTENCE grant) ; Hydro-Quebec (PERSISTENCE grant) ; Manitoba Hydro (PERSISTENCE grant) ; Ouranos consortium (PERSISTENCE grant) ; China Scholarship Council ; Science and Technology Department of the Xinjiang Autonomous Region[2016D03005] ; Institute of Desert Meteorology, China Meteorological Administration[IDM201202] ; National Natural Science Foundation of China[41571094]
WOS研究方向Environmental Sciences & Ecology ; Geology
语种英语
出版者COPERNICUS GESELLSCHAFT MBH
WOS记录号WOS:000574779200001
资助机构Natural Sciences and Engineering Research Council of Canada (PERSISTENCE grant) ; Hydro-Quebec (PERSISTENCE grant) ; Manitoba Hydro (PERSISTENCE grant) ; Ouranos consortium (PERSISTENCE grant) ; China Scholarship Council ; Science and Technology Department of the Xinjiang Autonomous Region ; Institute of Desert Meteorology, China Meteorological Administration ; National Natural Science Foundation of China
源URL[http://ir.igsnrr.ac.cn/handle/311030/157021]  
专题中国科学院地理科学与资源研究所
通讯作者Wang, Feng
作者单位1.Univ Quebec Montreal, GEOTOP, Dept Geog, Montreal, PQ H3A 0B9, Canada
2.Univ Quebec Rimouski, Dept Biol Chim & Geog, Rimouski, PQ G5L 3A1, Canada
3.Univ Quebec Rimouski, Ctr Etud Nord, Rimouski, PQ G5L 3A1, Canada
4.Univ Quebec Montreal, Ctr Etud Nord, Montreal, PQ H3A 0B9, Canada
5.China Meteorol Adm, Key Lab Tree Ring Ecol Uigur Autonomous Reg, Inst Desert Meteorol, Urumqi 830002, Peoples R China
6.China Meteorol Adm, Key Lab Tree Ring Phys & Chem Res, Inst Desert Meteorol, Urumqi 830002, Peoples R China
7.UQAR ISMER, Canada Res Chair Geochem Coastal Hydrogeosyst, Quebec Ocean, Rimouski, PQ G5L 3A1, Canada
8.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
9.Univ Laval, Dept Geog, Quebec City, PQ G1V 0A6, Canada
推荐引用方式
GB/T 7714		 Wang, Feng,Arseneault, Dominique,Boucher, Etienne,et al. Chemical destaining and the delta correction for blue intensity measurements of stained lake subfossil trees[J]. BIOGEOSCIENCES,2020,17(18):4559-4570.
APA Wang, Feng.,Arseneault, Dominique.,Boucher, Etienne.,Yu, Shulong.,Ouellet, Steeven.,...&Wang, Lily.(2020).Chemical destaining and the delta correction for blue intensity measurements of stained lake subfossil trees.BIOGEOSCIENCES,17(18),4559-4570.
MLA Wang, Feng,et al."Chemical destaining and the delta correction for blue intensity measurements of stained lake subfossil trees".BIOGEOSCIENCES 17.18(2020):4559-4570.

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